Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
[linux-2.6] / arch / arm / mach-pxa / zylonite_pxa320.c
1 /*
2  * linux/arch/arm/mach-pxa/zylonite_pxa320.c
3  *
4  * PXA320 specific support code for the
5  * PXA3xx Development Platform (aka Zylonite)
6  *
7  * Copyright (C) 2007 Marvell Internation Ltd.
8  * 2007-08-21: eric miao <eric.miao@marvell.com>
9  *             initial version
10  *
11  * This program is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License version 2 as
13  * published by the Free Software Foundation.
14  */
15
16 #include <linux/module.h>
17 #include <linux/kernel.h>
18 #include <linux/init.h>
19
20 #include <asm/arch/gpio.h>
21 #include <asm/arch/mfp-pxa320.h>
22 #include <asm/arch/zylonite.h>
23
24 #include "generic.h"
25
26 static mfp_cfg_t mfp_cfg[] __initdata = {
27         /* LCD */
28         GPIO6_2_LCD_LDD_0,
29         GPIO7_2_LCD_LDD_1,
30         GPIO8_2_LCD_LDD_2,
31         GPIO9_2_LCD_LDD_3,
32         GPIO10_2_LCD_LDD_4,
33         GPIO11_2_LCD_LDD_5,
34         GPIO12_2_LCD_LDD_6,
35         GPIO13_2_LCD_LDD_7,
36         GPIO63_LCD_LDD_8,
37         GPIO64_LCD_LDD_9,
38         GPIO65_LCD_LDD_10,
39         GPIO66_LCD_LDD_11,
40         GPIO67_LCD_LDD_12,
41         GPIO68_LCD_LDD_13,
42         GPIO69_LCD_LDD_14,
43         GPIO70_LCD_LDD_15,
44         GPIO71_LCD_LDD_16,
45         GPIO72_LCD_LDD_17,
46         GPIO73_LCD_CS_N,
47         GPIO74_LCD_VSYNC,
48         GPIO14_2_LCD_FCLK,
49         GPIO15_2_LCD_LCLK,
50         GPIO16_2_LCD_PCLK,
51         GPIO17_2_LCD_BIAS,
52         GPIO14_PWM3_OUT,        /* backlight */
53
54         /* FFUART */
55         GPIO41_UART1_RXD | MFP_LPM_EDGE_FALL,
56         GPIO42_UART1_TXD,
57         GPIO43_UART1_CTS,
58         GPIO44_UART1_DCD,
59         GPIO45_UART1_DSR | MFP_LPM_EDGE_FALL,
60         GPIO46_UART1_RI,
61         GPIO47_UART1_DTR,
62         GPIO48_UART1_RTS,
63
64         /* AC97 */
65         GPIO34_AC97_SYSCLK,
66         GPIO35_AC97_SDATA_IN_0,
67         GPIO37_AC97_SDATA_OUT,
68         GPIO38_AC97_SYNC,
69         GPIO39_AC97_BITCLK,
70         GPIO40_AC97_nACRESET,
71
72         /* WM9713 IRQ */
73         GPIO15_GPIO,
74
75         /* I2C */
76         GPIO32_I2C_SCL,
77         GPIO33_I2C_SDA,
78
79         /* Keypad */
80         GPIO105_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
81         GPIO106_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
82         GPIO113_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
83         GPIO114_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
84         GPIO115_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
85         GPIO116_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
86         GPIO117_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
87         GPIO118_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
88         GPIO119_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
89         GPIO120_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
90         GPIO121_KP_MKOUT_0,
91         GPIO122_KP_MKOUT_1,
92         GPIO123_KP_MKOUT_2,
93         GPIO124_KP_MKOUT_3,
94         GPIO125_KP_MKOUT_4,
95         GPIO126_KP_MKOUT_5,
96         GPIO127_KP_MKOUT_6,
97         GPIO5_2_KP_MKOUT_7,
98
99         /* Ethernet */
100         GPIO4_nCS3,
101         GPIO90_GPIO,
102
103         /* MMC1 */
104         GPIO18_MMC1_DAT0,
105         GPIO19_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
106         GPIO20_MMC1_DAT2,
107         GPIO21_MMC1_DAT3,
108         GPIO22_MMC1_CLK,
109         GPIO23_MMC1_CMD,/* CMD0 for slot 0 */
110         GPIO31_GPIO,    /* CMD1 default as GPIO for slot 0 */
111
112         /* MMC2 */
113         GPIO24_MMC2_DAT0,
114         GPIO25_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
115         GPIO26_MMC2_DAT2,
116         GPIO27_MMC2_DAT3,
117         GPIO28_MMC2_CLK,
118         GPIO29_MMC2_CMD,
119 };
120
121 #define NUM_LCD_DETECT_PINS     7
122
123 static int lcd_detect_pins[] __initdata = {
124         MFP_PIN_GPIO72,   /* LCD_LDD_17 - ORIENT */
125         MFP_PIN_GPIO71,   /* LCD_LDD_16 - LCDID[5] */
126         MFP_PIN_GPIO17_2, /* LCD_BIAS   - LCDID[4] */
127         MFP_PIN_GPIO15_2, /* LCD_LCLK   - LCDID[3] */
128         MFP_PIN_GPIO14_2, /* LCD_FCLK   - LCDID[2] */
129         MFP_PIN_GPIO73,   /* LCD_CS_N   - LCDID[1] */
130         MFP_PIN_GPIO74,   /* LCD_VSYNC  - LCDID[0] */
131         /*
132          * set the MFP_PIN_GPIO 14/15/17 to alternate function other than
133          * GPIO to avoid input level confliction with 14_2, 15_2, 17_2
134          */
135         MFP_PIN_GPIO14,
136         MFP_PIN_GPIO15,
137         MFP_PIN_GPIO17,
138 };
139
140 static int lcd_detect_mfpr[] __initdata = {
141         /* AF0, DS 1X, Pull Neither, Edge Clear */
142         0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440, 0x8440,
143         0xc442, /* Backlight, Pull-Up, AF2 */
144         0x8445, /* AF5 */
145         0x8445, /* AF5 */
146 };
147
148 static void __init zylonite_detect_lcd_panel(void)
149 {
150         unsigned long mfpr_save[ARRAY_SIZE(lcd_detect_pins)];
151         int i, gpio, id = 0;
152
153         /* save the original MFP settings of these pins and configure them
154          * as GPIO Input, DS01X, Pull Neither, Edge Clear
155          */
156         for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++) {
157                 mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
158                 pxa3xx_mfp_write(lcd_detect_pins[i], lcd_detect_mfpr[i]);
159         }
160
161         for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
162                 id = id << 1;
163                 gpio = mfp_to_gpio(lcd_detect_pins[i]);
164                 gpio_direction_input(gpio);
165
166                 if (gpio_get_value(gpio))
167                         id = id | 0x1;
168         }
169
170         /* lcd id, flush out bit 1 */
171         lcd_id = id & 0x3d;
172
173         /* lcd orientation, portrait or landscape */
174         lcd_orientation = (id >> 6) & 0x1;
175
176         /* restore the original MFP settings */
177         for (i = 0; i < ARRAY_SIZE(lcd_detect_pins); i++)
178                 pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
179 }
180
181 void __init zylonite_pxa320_init(void)
182 {
183         if (cpu_is_pxa320()) {
184                 /* initialize MFP */
185                 pxa3xx_mfp_config(ARRAY_AND_SIZE(mfp_cfg));
186
187                 /* detect LCD panel */
188                 zylonite_detect_lcd_panel();
189
190                 /* GPIO pin assignment */
191                 gpio_eth_irq    = mfp_to_gpio(MFP_PIN_GPIO9);
192
193                 /* MMC card detect & write protect for controller 0 */
194                 zylonite_mmc_slot[0].gpio_cd  = mfp_to_gpio(MFP_PIN_GPIO1);
195                 zylonite_mmc_slot[0].gpio_wp  = mfp_to_gpio(MFP_PIN_GPIO5);
196
197                 /* WM9713 IRQ */
198                 wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO15);
199         }
200 }